/**
 * This file is part of WiiuseJ.
 * 
 * WiiuseJ is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * WiiuseJ is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * WiiuseJ. If not, see <http://www.gnu.org/licenses/>.
 */
package wiiusej.utils;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.util.ArrayList;

import wiiusej.values.GForce;
import wiiusej.wiiusejevents.GenericEvent;
import wiiusej.wiiusejevents.physicalevents.ExpansionEvent;
import wiiusej.wiiusejevents.physicalevents.IREvent;
import wiiusej.wiiusejevents.physicalevents.MotionSensingEvent;
import wiiusej.wiiusejevents.physicalevents.WiimoteButtonsEvent;
import wiiusej.wiiusejevents.utils.WiimoteListener;
import wiiusej.wiiusejevents.wiiuseapievents.ClassicControllerInsertedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.ClassicControllerRemovedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.DisconnectionEvent;
import wiiusej.wiiusejevents.wiiuseapievents.GuitarHeroInsertedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.GuitarHeroRemovedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.NunchukInsertedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.NunchukRemovedEvent;
import wiiusej.wiiusejevents.wiiuseapievents.StatusEvent;

/**
 * This panel is used to watch gravity force values from a MotionSensingEvent.
 * 
 * @author guiguito
 */
public abstract class GForcePanel extends javax.swing.JPanel implements
    WiimoteListener
{

    private Image mImage;// image for double buffering
    private Color xColor = Color.RED;
    private Color yColor = Color.GREEN;
    private Color zColor = Color.BLUE;
    private Color backgroundColor = Color.WHITE;
    private Color lineColor = Color.BLACK;
    private ArrayList<GForce> values = new ArrayList<GForce>();

    /**
     * Default constructor of the AccelerationPanel.
     */
    public GForcePanel()
    {
        initComponents();
    }

    /**
     * Constructor used to choose the colors used by the AccelerationPanel.
     * 
     * @param bgColor
     *            background color.
     * @param xxColor
     *            color of the acceleration on X axis.
     * @param yyColor
     *            color of the acceleration on Y axis.
     * @param zzColor
     *            color of the acceleration on Z axis.
     * @param lColor
     *            line color.
     */
    public GForcePanel(
        Color bgColor,
        Color xxColor,
        Color yyColor,
        Color zzColor,
        Color lColor)
    {
        backgroundColor = bgColor;
        xColor = xxColor;
        yColor = yyColor;
        zColor = zzColor;
        lineColor = lColor;
        initComponents();
    }

    @Override
    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        Dimension d = getSize();
        checkOffScreenImage();
        Graphics offG = mImage.getGraphics();
        offG.setColor(backgroundColor);
        offG.fillRect(0, 0, d.width, d.height);
        Graphics2D g2 = (Graphics2D) mImage.getGraphics();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);

        // draw medium line
        double yMiddleFloat = getHeight() / 2.0;
        int yMiddle = (int) Math.round(yMiddleFloat);

        g2.setPaint(lineColor);
        g2.drawLine(0, yMiddle, getWidth(), yMiddle);

        GForce[] valuesArray = values.toArray(new GForce[0]);
        double unit = yMiddleFloat / 5.0;
        int previousX = 0;
        int previousY = 0;
        int previousZ = 0;
        // draw curves
        for (int i = 0; i < valuesArray.length && i < getWidth(); i++)
        {
            GForce gforce = valuesArray[i];
            // draw X
            g2.setPaint(xColor);
            int yDelta = (int) Math.round(unit * gforce.getX());
            int y = -1 * yDelta + yMiddle;
            g2.drawLine(i - 1, previousX, i, y);
            g2.setTransform(new AffineTransform());
            previousX = y;
            // draw Y
            g2.setPaint(yColor);
            yDelta = (int) Math.round(unit * gforce.getY());
            y = -1 * yDelta + yMiddle;
            g2.drawLine(i - 1, previousY, i, y);
            g2.setTransform(new AffineTransform());
            previousY = y;
            // draw Z
            g2.setPaint(zColor);
            yDelta = (int) Math.round(unit * gforce.getZ());
            y = -1 * yDelta + yMiddle;
            g2.drawLine(i - 1, previousZ, i, y);
            g2.setTransform(new AffineTransform());
            previousZ = y;
        }

        // draw legend
        g2.setPaint(xColor);
        g2.drawLine(5, getHeight() - 10, 25, getHeight() - 10);
        g2.setPaint(yColor);
        g2.drawLine(60, getHeight() - 10, 80, getHeight() - 10);
        g2.setPaint(zColor);
        g2.drawLine(120, getHeight() - 10, 140, getHeight() - 10);

        g2.setPaint(lineColor);
        g2.drawString("X", 30, getHeight() - 5);
        g2.drawString("Y", 85, getHeight() - 5);
        g2.drawString("Z", 145, getHeight() - 5);
        g2.drawString("0", 2, yMiddle - 5);
        g2.drawString("5", 2, 10);
        g2.drawString("-5", 2, getHeight() - 15);
        // put offscreen image on the screen
        g.drawImage(mImage, 0, 0, null);
    }

    /**
     * check if the mImage variable has been initialized. If it's not the case
     * it initializes it with the dimensions of the panel. mImage is for double
     * buffering.
     */
    private void checkOffScreenImage()
    {
        Dimension d = getSize();
        if (mImage == null || mImage.getWidth(null) != d.width
                || mImage.getHeight(null) != d.height)
        {
            mImage = createImage(d.width, d.height);
        }
    }

    public void onButtonsEvent(WiimoteButtonsEvent arg0)
    {
        // nothing
    }

    public void onIrEvent(IREvent arg0)
    {
        // nothing
    }

    public void onMotionSensingEvent(MotionSensingEvent arg0)
    {
        draw(arg0);
    }

    public void onExpansionEvent(ExpansionEvent arg0)
    {
        draw(arg0);
    }

    public void onStatusEvent(StatusEvent arg0)
    {
        // nothing
    }

    public void onDisconnectionEvent(DisconnectionEvent arg0)
    {
        // Clear points.
        values.clear();
        repaint();
    }

    public void onNunchukInsertedEvent(NunchukInsertedEvent arg0)
    {
        // nothing
    }

    public void onNunchukRemovedEvent(NunchukRemovedEvent arg0)
    {
        // nothing
    }

    public void onGuitarHeroInsertedEvent(GuitarHeroInsertedEvent arg0)
    {
        // nothing
    }

    public void onGuitarHeroRemovedEvent(GuitarHeroRemovedEvent arg0)
    {
        // nothing
    }

    public void onClassicControllerInsertedEvent(ClassicControllerInsertedEvent arg0)
    {
        // nothing
    }

    public void onClassicControllerRemovedEvent(ClassicControllerRemovedEvent arg0)
    {
        // nothing
    }

    private void draw(GenericEvent arg0)
    {
        if (values.size() >= getWidth())
        {
            // if there are as many values as pixels in the width
            // clear points
            values.clear();
        }
        GForce gforce = getGForceValue(arg0);
        if (gforce != null) values.add(gforce);
        repaint();
    }

    public abstract GForce getGForceValue(GenericEvent e);

    public Color getBackgroundColor()
    {
        return backgroundColor;
    }

    public Color getLineColor()
    {
        return lineColor;
    }

    public Color getXColor()
    {
        return xColor;
    }

    public Color getYColor()
    {
        return yColor;
    }

    public Color getZColor()
    {
        return zColor;
    }

    public void setBackgroundColor(Color backgroundColor)
    {
        this.backgroundColor = backgroundColor;
    }

    public void setLineColor(Color lineColor)
    {
        this.lineColor = lineColor;
    }

    public void setXColor(Color xColor)
    {
        this.xColor = xColor;
    }

    public void setYColor(Color yColor)
    {
        this.yColor = yColor;
    }

    public void setZColor(Color zColor)
    {
        this.zColor = zColor;
    }

    public void clearView()
    {
        values.clear();
        repaint();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated
    // Code">//GEN-BEGIN:initComponents
    private void initComponents()
    {

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(layout.createParallelGroup(
                javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE));
        layout.setVerticalGroup(layout.createParallelGroup(
                javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE));
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables
}
